You cannot teach a man anything, you can only help him to find it for himself.
你不可能教一个人任何知识， 因为你只能帮助他自己去找他想学的。
The world is a beautiful book, but of little use to him who cannot read it.
当事人应置身于利害之外，提出倡议的人则应设身于利害之中，才能知道利害得失。
你必须对你所做的事情充满热情。